I agree with X-Maniac. She was definitely in sista-gurl territory in X3. And what a stark difference from the more regal and timid version we saw of her in X1. After the third film I just simply concluded that Storm had multiple personalities and was likely bi-polar. The woman was like a box of f***ing chocolates--you never knew what was inside from one film to the next!

Her character was growing throughout the movies. After Nightcrawler talked to her in X2, it was only a logical progression. He clearly had an impact on her, just like Mystique clearly had an impact on him after their talk.